(Atlanta, GA) -- Dustin Johnson looks to defend his Tour Championship title starting today at East Lake Golf Club in Atlanta.  Patrick Reed returns to play after being hospitalized with bilateral pneumonia last week.  Reed tees off the tournament with Billy Horschel.  The winner of last week's BMW Championship, Patrick Cantlay, begins his quest for another tournament victory with Tony Finau.  Cantlay starts the tournament at ten-under, Finau is eight-under, DeChambeau is seven-under, Jon Rahm is six-under, and Cameron Smith closes out the top five starting positions at five-under par.